Improvement in heel-polishing machines



2 Sheets--Sheet i.

LQGRAF. A Heel Polishing Machine.

Patented 1unei5, i875.

VIITNESSES e ATTUHNEYS.

YHE GRAPHIC C0 PHOTOLITJH.39&4I PARK PLACEJLY.

2 Sheet s-Sheet 2.

L. GRAF. 4 Heel Polishing M ach ine.

Patented Jun'e15,1875.

I No. |`64.443.

WITNESSES THE GRAPHIC COPKOTCI LITH.39 8:41PARK PLACEJLYA UNITED STATESPATENT OFFICE.;

LEOPOLD GRAF, OE NEWARK, NEW JERsEY.

IMPROVEMENT IN HEEL-POLISHING MACHINES.

Specification forming part of Letters Patent No. 164,443, dated J une15, 1875; application filed May 15, 1875.

To all whom itmay concern Be it known that I, LEOPOLD GRAF, of Newark,in the county of Essex and State of New Jersey, have invented a new andImproved Heel-Polishing Machine, of which the following is aspecification:

The invention'will first be described in connection with drawing, andthen pointed out in the claims.

Figure 1 is a side elevation of my improved machine. Fig. 2 is ahorizontal section taken on the line a; Fig. 3 is a front elevation ofthe machine, except the yoke, which is sectioned. Fig. 4 is a face viewof the eccentric cam which governs the presentation of the heel to thepolisher. Fig. 5 is a section of the clamp for fastening the shoe in theyoke.

Similar letters of reference indicate corresponding parts.

A is the yoke, in which the shoe B is held by the adjustable clamp C andthe serrated heel-piece D to be rubbed smooth by the reciprocatingpolisher E. This clamp is iitted on the end of the rod F, which iscapable of sliding lengthwise in the tubular bearing G in the outer armof the yoke, and it has a knobhandle, I, for pulling it back, and theratchet J for being pushed up to the shoe by the pawl K, which ispivoted to the sliding dog L, which I propose to actuate by the cam M,having a crank or handle, N, for turning it, and being pivoted on thetube G between the yoke and the nut O to hold it to its work. Theadvantage of this caln is, that it can be operated very quickly tofasten and release the Work, as it only needs to be moved a quarter-turnor thereabout, which is important in the use of these machines, as thework has to be changed very often. The yoke is connected to its holder Pby a ball-and-socket or other universal joint, P', to allow the yoke tobe shifted in a way as may be required for heels of different form, asconcave, convex, or straight sided, and it also connects temporarily tothe plate Q by the notched stud Q', to turn the eccentrically rotatingplate W by the yoke. The holder P to which the yoke is pivoted isattached to the plate Q, which is bolted to the slotted plate It, whichis held on the shaft S by the nut '.l, and has a guide-pin, U, runningin the guide-slot V of the faceplate W, which is eccentric to the shaftS, for turning the surface of the irregular or eccentric heel evenly anduniformly against the polisher. The shaft S is iitted in the rockingframe X, so as to slide endwise a little, and has a retractingspring, ito pull itvback, so that the heel may be adjusted forward and backwardto the face of the polisher, as may be required, by pulling the shaftagainst the spring, and allowing the spring to pull it back. Thisrocking frame X is pivoted at Z, and connected to the foottreadle A by arod, Bf, for depressing the yoke to apply and remove the work withoutobstruction by the tool, and a spring, C', is employed to raise it, andhold the work up to the tool. As the yoke has to be depressed and raisedvery frequently, it is highly important that the tension of the springshould be just right; consequently I attach the spring to the axis of aratchet-wheel, D', having a holding-pawl, E', by which the tension canbe increased or diminished at Will.

Having thus described m yin ven tion, I claim as new, and desire tosecure by Letters Patent- 1. The lever-cam M, pivoted on the bearing G,in combination with the yoke A, dog L, pawl K, and the clamp C F,substantially as specified.

2. The combination of the eccentrically-rotating plate R with theyoke-holder, substantialiy as specified.

3. The ratchet-wheel D and holding-pawl E', combined with thelifting-spring C of the yoke-holder, substantially as speciiied.

LEOPOLD GRAF.

Witnesses:

T. B. MosHER, ALEX. F. ROBERTS.

